Category 1 - Aircraft types: Governmental/presidential aircraft (Can be taken anytime)
Japanese AF1 arriving Schiphol on an early Spring Morning in 2006

Category 2 - Close up: Line-up of tails
Duxford Jubilee Show

Category 3 - Action: Panning
Duxford Jubilee Show - WA591 departing back to Coventry

Category 4 - Weather: Dark storm cloud backgrounds (Can be taken anytime)
TLP at Florennes Belgium, 2003 - Those clouds had just dumped on us prior to the sortie

Category 5 - Angle: Topside - proper topside, roughly over 45 degrees of bank, not just slight.
Duxford Jubilee Show - TAZ during the Harvard pair routine
